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Audible altimeter for parachutists

  • US 5,638,059 A
  • Filed: 01/29/1996
  • Issued: 06/10/1997
  • Est. Priority Date: 01/29/1996
  • Status: Expired due to Fees
First Claim
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1. An altimeter for use by parachutists, the altimeter comprising:

  • a sensor means for sensing ambient air pressure and generating a signal P representing the sensed pressure;

    a first digital electronic memory MGL for storing a value PGL determined from the ambient air pressure signal P at ground level, and means for entering said value PGL into said memory;

    a digital electronic processor means connected to said sensor means and said first memory MGL and programmed to determine from said signal P and said value PGL the height HAGL of the altimeter above ground level;

    a second digital electronic memory MBO for storing a value HBO representing a desired break off height and means for entering a value into said second memory;

    a third digital electronic memory MSDH for storing a value HSDH representing a predetermined standard deployment height, anda sounder device connected to said digital electronic processor so as to receive a signal therefrom and to emit an audible signal when said signal is received;

    said digital electronic processor being connected to said second and third memories MBO and MSDH and programmed to compare said height HAGL with said values HBO and HSDH and to send signals to said sounder device causing said sounder device to emit a first audible signal when said height HAGL corresponds to the value HBO and a second audible signal when the sensed height HAGL corresponds to the value HSDH.

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